Shikabane Hime has 2 different seasons with 2 different names, the first being Aka, and the second being Kuro. However, Aka ended with little more than recaps, certainly no real finale, then Kuro began with the same OP and ED, with the same animation, other than changing the name in the logo from Aka to Kuro, and continued with the same story, timeframe, and enemies. On the other hand, the previous Gainax show, Gurren Lagann, was one season, and yet there was an episode in the middle that was more of a finale than this finale, followed by a recap episode, then another episode with an almost completely new OP (different verse of the same song with different animation) and a completely new ED, taking place 7 years later with different enemies. Also, the Shikabane Hime ED had changes within the first season. Where is the logic?
Anyway, at least the first episode of Kuro introduced some new characters. First we get a glimpse of a new piece of fanservice, later revealed to be a Shikabane Hime of a new contracted monk, and both are way more of otaku than Keisei could've ever dreamed to be. Also, we get to see some of the older characters, including everyone's favorite lesbian Breast Goddess!